Typewriting machine



Oct. 19,1926 1,603,401

H. L. PITMAN I TYPEWRITING MACHINE Filed Jan. 5. 1923 lure/2701':

flfforne Patented Oct. 19, 1926.

UNITED? stares;

- OF FlC E I HENRY-L. Helium; or wnsrrlnrinynnw hes tation we ensaawoon ea WRITnR coMPAnY; or 'nnw vome N. Y., ACORPoR 1T'Io-N0'? DELAWARE? TYPEWRITING M CHINE.

Application filed January 3, 1923; Serial ible-$10,410.

This inrentioni relates to typewritirigmachines, and moreparticularlyto computing mechanism to be actuated concomltantly with the typing of certain numbers.

In. typingybillsfor telephone service it] is necessary to type separately the amounts ofUnited ,titates taxes onthe individual taxable items, and it is desirable to be able to refer at any time to thetotal amount" of the tax items in. a definite periochsueh, for example, as a day ora longer period.

i ileretofore it has beenproposed to obtain the desired result loy providing a standard typewriting machine with a special"5- keyand a special 10 key for typing the corre spendingnumbers, and also wlth'asingle register of. the same. general type as the Veeder cyclometer but having its unitswheel marked withtt) and 5 alternately, said register having. means to carry over to the tens wheel eachtune the units: wheel is ad vanced from 5 to Itiwas also proposed to' provlde IHGAHS fOI advancing the units wheel one step for each actuation of the special key and two steps for each actuation of thespecial key.

An in'iportant feature of the present in vention.,.consists in the provision of improved means for actuating the units wheel .by means of the spec1al-5- and 10 keys.

{k3 herein illustrated, the units wheel of the register is advanced one step at each oscillation of an operating arm connected by A a linkwith one arm ofa lever to be oper ated. twice as far by thespecial 10 key as. by the special 5 key.

llhe link and the adjacent arm of thelever form a. toggle. which is straightened by depressionof the special 5 key,- and.

such straightening of the toggle advances the tilts wheel one step. WVhen, however, the special .10 key ]S actuated, the toggle is .not only straightened to actuate the units wheel one step, but 1s bent in the direction opposite to the normal to draw the register operating arm to its lnitial position, the

arm .being actuated again during the return movement of the special 10 key to'advance the units wheel another step. Obviously, the use of the toggle, in the manner disclosed renders it. possible to operate the registerby comparatively light pressure of the special keys.

Another feature consists in the provisionof full-stroke-devices for each of-the SPECIflh turned to its normal position.

keys to insure proper actuation of' the regis ter, said full-strokedevices being provided with novel; ad ustmg means A further feature of l the invention-consists in the proyisionof improved' means for mounting the registefand the register.

actuating devices on the framefofthe typewriting machine.

It should be understood that the invention is not limited in scope to the mechanism hereln disclosed nor to use 111 connection;

withthe particular class .of work described-- herein.

Other features and advantages will here--' inafter appear. y

In the accompanying drawings,

Figure 1 is a fragmentary side elevatiom;

necessary for the purpose ofillustr ation.

F1gure 2 isa'front V16W of the fmechashowing theinvention applied to so muclif ot a standard typewriting -machlne as 1s" nism shown in Figure '1 asection being taken alohgthe line 2-2 of Figurelr Figure 3 is a detail showing -the position;

of theparts when the 5key.is -in depressed position. 1 l

Figure 4 is a detail view similar to Fig-- ure 3, showing the position of the parts when ithe l O key has been depressed sufticiently to straighten the operating toggle, and also showing: the full-stroke mechamsm asso-' ciated with the special 10? key.

Figure 5 is a view similar to Figure &, but showing the position ofthe parts when the depression of the special 10 key has been completed, the toggle being collapsed?" vusual number and alphabet keys 11, and; in

addition, a special 5 key 12 and a special I 10 key 13, preferably aranged at the'righthand end of the keyboard. Upon depression let any one of said keys, a corresponding key-- lever 14. willbe depressed cause a type-bar 15 to be swung-upwardly and rearwardly to "effect typing by means of types 16. Upon depression of the special 5" key} 12m print the number 5 on'a work-sheet,

the forward end of the corresponding keylever 14 which overlies a pin 17 at the forward end of a substantially horizontal arm 18 of ,a bell-crank lever 19 will rock said lever 19 about its pivot 20 and swing a second arm 21 of the bell-crank lever from its normal position, extending upwardlyand rearwardly from the pivot 26, to a substantially vertical position, as shown in Figure 3, thereby thrusting upwardly a link 22 which is pivoted at its lower end to said arm 21 and at its upper end to an oscillatory arm 23 which serves to actuate a register 24. It willbe seen that the arm 21 and the link 22 form a toggle, indicated in general by 25, so that the actuation of the register may be effected by a comparatively light pressure of the key 12.

Upon the return movement of the key 12 the bell-crank 19 and the parts connected therewith will be restored to their normal positions by means of a spring 25 connected at its forward end to the bell-crank 19 and at its rear end to any convenient fixed part of the machine.

The register 24 is of the same general type as the Veeder cyclometer, and comprises a series of number-wheels or dials 26. The register may be substantially the same as that disclosed in an application of Alfred G. F. Kurowski, Serial No. 599,221, filed November 6 1922 (new Patent No. 1,574,906, dated hfarch 2, 1926). Inasmuch as the register is to register the addition of 5 and 10 only, the wheel of lowest denomination is provided with 0 and 5 arranged alternately, and the carry-over mechanism is arranged to actuate the dial or wheel of next higher denomination each time a 5 0n the dial of lowest denomination is shifted from the sight-opening 27 and replaced by the O immediately succeeding. It should be understood that the carry-over from the second wheel from the right is effected only when tiat wheel or dial has made a complete revolution, and the'saine is true of other wheels of higher denomination.

For actuating the bell-crank 19 when the special 10 key 13 is depressed, provision is made of a link 28 pivoted at its upper end tothe forward end of the key-lever 14 corresponding to the key 13, and connected at its other end with the forwardly-extending arm 18 of the bell-crank lever 19 by means of a headed screw 29 passing through a slot 30 in the lower end of the link 28, and threaded into said arm 18 at a point intermediate the pin 17 and the pivot 20. It will be seen by reference to Figure 3 that the slot 30 is of such length that, upon depression of the special 5 key 12, the screw 29 will merely be shifted to the lower end of the slot 30 and will produce no result on the special 10 key Upon depression of the special 10 key 13, the bell-crank lever will be shifted first to the position shown in Figure 4 to actuate the arm 23 and consequently advance the dial of lowest denomination one step. Upon completing the depression of the key 13 the toggle will be bent to the front, as shown in Figure 5, and the oscillating arm 23 will be drawn down to its normalposition, and upon the return of the key 13 to its normal position and the consequent return of the bell-crank 19, the arm 23 will be actuated again as the parts assume the position shown in Figure 4, and then arm 23 will be restored to its normal position with the other parts in the position shown in Figure 1.

To support the register 24, provision is made of a bracket 31 having a register-supporting shelf 32 extending outwardly over a downwardlyinclined member 33 forming part of the ke board extension 34, the shelf lying close to the front of the main frame The bracket also comprises a downwardly-extending portion or flange 36, which is secured to the side of the keyboard extensigi by screws 37 passing through the latter from the outside and threaded into the flange 36. It will be evident that the weight of the register will rest largely on the side of the keyboard extension and very little stress will be exerted 011 the flange 36 and the screws 37.

To support the bell-crank 19, its pivot 20, which is in the form of a screw, is threaded into a boss 38 formed on a bracket 39, which comprises a substantially vertical portion 46 and a horizontal portion 41, which engages the lower side of the main frame, and is held thereagainst by a foot 42 of the main frame secured in position by means of a screw 43 extending axially through the foot 42 and an opening in the portion 41 and threaded into the main frame. Provision inay also be made of a screw 44 passing through another opening in the horizon tal portion 41 and threaded into the lower part of the frame.

For the purpose of insuring proper actua tion of the register by means'of the special keys 12 and 13, provision may be made of suitable full-stroke mechanism. To this end, a pawl 45 is mounted by means of a pivot 46 on the keylever 14 corresponding to the special key 12, and is held with the acting end of the pawl substantially in horizontal position by means of a spring 47 attached at one end to the pawl at the rear of its pivot 46, and at the other end to the key-lever near its forward end. The keylever 14, corresponding to the key 13, is also provided with a pawl 48 mounted on a pivot 49, and yieldably held in centered position by means of a spring 50. The pawl 45 cooperates with a rack 51 formed on ablock 52, which is provided with a depression 53 at the upper end of the rack, so that when the key 12 in its normal position the pawl 45 will beheld in its centered. position by means of the spring fi. Upon depression ofthe key 12, the rear end of the pawl will be swung upwardly by engagement with the block 52 above the upper end of the rack 51, so that, when the pawl is brought into engagement with the rack, the point of the pawl will extend upwardly and will prevent any upward movement of the key 12 until the key has been depressed sufliciently to-carry the point of the pawl below the lower end ot the rack 51, the pawl being released at this point and permitted to swing into centered position by means of a second depression 54 in the block 52.

Itwill be evident that as soon as the key 12 begins its return movement, thepoint of the pawl will be swung downwardly and will serve to prevent any downward movement of the key before it is returned to its normal position and the pawl 45 has been restored to its normal. position in the depression 53. To cooperate with the pawl 48 associated with the special key 13, provision may be made of a second rack 55 formed on the front of a block 56 whichis provided with depressions 57 and 58 corresponding to depressions and 54:, respectively, in the block 52. Each of the blocks 52 and 56 has a slot 59 at its upper end through which passes a screw 60 threaded into a guide-plate 61 for the key-levers 14. The arrangement thus described enables the racks 511 and 55 to be adjusted in a vertical direction to the proper range for co-operation with the corresponding pawls, and to be secured in such position by the screws 60.

It has been found desirable also to provide means for adjusting the blocks 52 and 56 forwardly and rearwardly to bring the corresponding racks 51 and 55 into the proper co-operative relation with the respective pawls 45 and 48. To this end the blocks 52 and 56 are given a more or less wedge-like form, and back of each one of the blocks is inserted a wedge-like member 62 tapered in the opposite direction, so that, by moving the blocks in one direction and the members 62 in the other, the blocks may be moved either'ttorwardly or rearwardly. -To enable such movementioi the members 62, each of them is provided with a slot 63 at its upper end. Such adjustment of the blocks 52 and 56 with the corresponding members 62 may be eiiected when the screws 60 are loosened, and the screws may then be tightened to retain such adjustment. To prevent the blocks 52 and 56' and the corresponding wedge-like supporting members from being moved rearwardiy when the pawls engage the corresponding racks, each member 62 is special keyfortypmg a number, a register extended downwardly and is supported against rearward movement by means of a small bracket 64 secured by means of screws. 65 to the vertical portion of the bracket 39. w

Variations may be resorted to within the scope of the invention, and portions otthe improvements maybe used without others.

Having thus described my'invention, I claim: V 1. In a machine of the class described, in combination, a register comprising a dial, two keys, and actuating means for said dial operable by one oi: said keys to advance the dial during the depression of the key and to return idly during the return of the key and operable by the second key to advance said dial during depression of the key and also during the return of the key.

2. In a machine of the class described, in combination, a register comprising a dial, dial-operating mechanism comprising a toggle, a key, and key-operable means to straighten the toggle to advance the dial.

' 3.-In a machine of the class described, in combination, a register comprising a dial, dial-operating mechanism comprising a toggle, a key, and key-operable means to straighten the toggle, once during the depression of the keyand once during the returnot the key, to advance the dial.

i. In a machine of the class described, in combination, a register comprising adial, dial-operatin g mechanism comprising a toggle, a key effective in one operation thereof to straighten the toggle to advance the dial and to return the toggle to its normal position, and a secondkey effective in its down ward movement to'straighten the toggle and also to bend the toggle in the opposite direction preparatory to again straightening the toggle and again advancing the dial during the return of the key.

' 5. In a mach ne of the class described, in combination, a register comprising a dial, dial-operating mechanism ooi'nprising a toggle, a key, 7 and key-operable -means to straightenthe toggle a plurality of times at each complete operation of the key.

6. In a machine of the class described, a

"special key'for typing a number, a register comprising a dial, and dial-actuating means comprising a key-controlled]toggle to be straightened to actuate the dial during depression of the key and to be returned to normal position during the return-of the key. a

7. In a machine of the class described, a special key for typing a number, a register comprising a dial, and dial-actuating means comprising a key-controlled toggle to be straightened to actuate the dial both during the depression of said key and during the returnof the key.

8. In a machine otthe class described, a

comprising a dial, and dial-actuating means comprising a key-controlled toggle to be straightened and collapsed during the .depression of the key and straightened and collapsed during the return of the key to advance the dial during both the depression and the return of the key.

9. In a machine of the class described, two special keys for writing numbers, one of said'numbers being double the other, a register. an oscillatory arm for actuating the register, a toggle for oscillating said arm, and means for actuating said toggle once when the key of lower value is operated and twice when the key ofhigher value is operated.

10. In a machine of the class described, two special keys forwriting numbers of different values, a register, an oscillatory arm for actuating the register, a toggle for oscillating said arm, and means for actuating said toggle so that the number of actuations of the toggle caused by depression of either one of said keys is proportional to the value of the key deprcssed.

11. In a machine of the class described, in combination, a register having a plurality of dials and an oscillatory arm to actuate the dial of lowest denomination, a pivoted lever, a link pivoted to said arm and forming with said lever a toggle to operate said arm. and means, including keysdial during movement of the key in one dieach typing a complete item at a single operation, for actuating said lever to straighten andcollapse said toggle a number of times proportional. to the value of the itemtyped.

12. In a typewriting machine. a register comprising a dial, special keys for -advancing said dial to different extents, a key-lever for each of said keys, a full-stroke pawl on each of said key-levers, a full-stroke rack for each of said pawls, a vertically-movable support for each of said racks for individual adjustment thereof, a screw passing through each ofsaid racks and through a slot in the corresponding support to secure them in adjusted position on a fixed part of the machine, and a bracket projecting from the lower part of the frame back of the lower ends of the supports to maintain the supports in proper position.

13. In a typewriting machine, a register comprising a dial, special keys for advancing said dial to different extents a keylever for each of said keys, a full-stroke pawl on each of said key-levers, a full.-

stroke rack for each of said pawls, a verti-.

callymovable support for each of said racks for individual adjustment thereof, and a screw passing througha slot in each of said racks and through a slot in the corresponding support to secure them in adjusted position on a fixed part of the machine, the back face of each rack and the front face of the corresponding support being inclined in opposite directions to enable adjustment of the racks forwardly and rearwardly.

14. In a typewriting machine having a frame with a forward keyboard extension having sides, in combination, special numher-keys at one side of the keyboard extension, a register to be actuated by said kevs, and a register-supporting bracket comprising a shelf resting on the top of the adjacent side 'of the extension and having a flange extending downwardly just inside said side and secured to the frame.

15. In a typewriting machine having a frame and feet secured to the bottom of the frame by screws passing axially through the feet and threaded into the frame, in combination, a register fixed on said'frame, two special keys, register-actuating means including a pivoted bell-crank actuable in proportion to thevalue of the special key depressed, and a bracket on which said bellcrank is pivoted, said bracket having a horizontal flange passing between the bottom of the frame and the forward foot on the same side as the special keys and secured in such position by means including the screw which holds the foot in position.

16. In a machine of the class described, in combination, a register comprising a dial, two keys, and actuating means for said dial operable by one of said keys to advance the rection only, and operable by the second key to advance the dial during depression of the key and also during the return of the key.

17. In a typewriting machine, a register comprising a dial and an oscillatory operating arm therefor to advance the dial a step at each oscillation, a reciprocable member constructed, and arranged to impart a full oscillation to the register-operating arm during its complete advance stroke. and to impart a full oscillation to the register-opcrating arm during its complete retracting stroke, a key for writing a' number, arrangedQwhen operated, to cause the reciprocable member to be advanced a half stroke and returned to initial position, thereby imparting one full oscillation to the registeroperating arm, and a key for writing a number twice as great as the first, arranged, when operated, to cause the reciprocable member'to be advanced a full stroke and returned to initial position, thereby imparting two full oscillations to the registeroperating arm.

18. In a typewriting machine, the combination of a register. a pair of type-keys, and means actuable by one key, capable of operating the register only once for each complete key-operation, said means actuable by the other key to operate the register twice in succession, once on the down stroke of the key and again on the return stroke of the key.

19. In a typewriting machine, the combination of a register, a pair of type-keys, a toggle to operate the register, and means actuable by one key to straighten out the toggle to register once, and actuable by the other key to straighten out the toggle twice to register twice in succession.

20. In a typewriting machine, the combination of a register, a pair of type-keys, a toggle to operate the register, and means actuable on the down stroke of one key to straighten out the toggle to register once,

HENRY L. PITMAN. 

